linux-kernel - [tip:x86/mce] x86/microcode/AMD: Clean up find_equiv

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Message-ID: <tip-1f02ac0682055418753fe30e6433dcb11fd03e1c@git.kernel.org>
Date:   Mon, 23 Jan 2017 01:08:50 -0800
From:   tip-bot for Borislav Petkov <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...nel.org,
        bp@...e.de, hpa@...or.com
Subject: [tip:x86/mce] x86/microcode/AMD: Clean up find_equiv_id()

Commit-ID:  1f02ac0682055418753fe30e6433dcb11fd03e1c
Gitweb:     http://git.kernel.org/tip/1f02ac0682055418753fe30e6433dcb11fd03e1c
Author:     Borislav Petkov <bp@...e.de>
AuthorDate: Fri, 20 Jan 2017 21:29:43 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Mon, 23 Jan 2017 10:02:46 +0100

x86/microcode/AMD: Clean up find_equiv_id()

No need to have it marked "inline" - let gcc decide. Also, shorten the
argument name and simplify while-test.

While at it, make it into a proper for-loop and simplify it even more,
as tglx suggests.

No functionality change.

Signed-off-by: Borislav Petkov <bp@...e.de>
Link: http://lkml.kernel.org/r/20170120202955.4091-5-bp@alien8.de
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 arch/x86/kernel/cpu/microcode/amd.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index 6a31e26..5c1509a3 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -97,20 +97,13 @@ static size_t compute_container_size(u8 *data, u32 total_size)
 	return size;
 }
 
-static inline u16 find_equiv_id(struct equiv_cpu_entry *equiv_cpu_table,
-				unsigned int sig)
+static u16 find_equiv_id(struct equiv_cpu_entry *equiv_table, u32 sig)
 {
-	int i = 0;
-
-	if (!equiv_cpu_table)
-		return 0;
-
-	while (equiv_cpu_table[i].installed_cpu != 0) {
-		if (sig == equiv_cpu_table[i].installed_cpu)
-			return equiv_cpu_table[i].equiv_cpu;
-
-		i++;
+	for (; equiv_table && equiv_table->installed_cpu; equiv_table++) {
+		if (sig == equiv_table->installed_cpu)
+			return equiv_table->equiv_cpu;
 	}
+
 	return 0;
 }